Virtual Server

Im running FreeRadius 2.1.8 to allow wireless access and that is working great. I now want to have the vpn auth against the freeradius server for access, but checking for a different ldap attribute on the user. I read the virtual servers wiki and it says that all modules are global across virtual servers. Do I need to set up another install of freeradius so I can check for the other ldap attribute or is there a better way to get this accomplished? Thanks for your help.